Laser technology uncovers 1,600-year-old Christian frescoes in Rome's biggest catacomb
Nick Squires, Rome
30 May 2017 • 5:24pm
Deep in a labyrinth of dank tunnels, in the heart of Rome’s oldest and largest catacombs, archaeologists have discovered an exquisite set of 1,600-year-old frescoes painted to commemorate the city’s early Christians.
Experts used the latest laser technology to uncover the centuries of grime which had rendered the frescoes invisible.
http://www.telegraph.co.uk/news/2017/05/30/laser-technology-uncovers-1600-year-old-christian-frescoes-romes/